18969000019 has 2 divisors, whose sum is σ = 18969000020. Its totient is φ = 18969000018.

The previous prime is 18968999983. The next prime is 18969000073. The reversal of 18969000019 is 91000096981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18969000019 is a prime.

It is a super-2 number, since 2×18969000019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18969000619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9484500009 + 9484500010.

It is an arithmetic number, because the mean of its divisors is an integer number (9484500010).

Almost surely, 2^18969000019 is an apocalyptic number.

18969000019 is a deficient number, since it is larger than the sum of its proper divisors (1).

18969000019 is an equidigital number, since it uses as much as digits as its factorization.

18969000019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 18969000019 in words is "eighteen billion, nine hundred sixty-nine million, nineteen", and thus it is an aban number.